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A tunable reflective polarization converter based on hybrid metamaterial

机译：基于混合超材料的可调反射偏振转换器

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摘要

A hybrid metamaterial converter based on a hybrid layer, a gold (Au) film and a dielectric substrate is proposed to realize linear and circular polarization conversions in the terahertz (THz) band. The hybrid layer is composed of a vanadium dioxide (VO_2) plane and I-shaped resonators. The polarization conversion ratio (PCR) above 90% is achieved in a broad band range from 2.10 to 5.03 THz under both linearly and circularly polarized waves. And, the PCR is up to near unity around the resonant frequency. Meanwhile, the metamaterial convenor is sensitive to the incident angles. Moreover, a controlled modulation characteristic can be realized by the proposed polarization converter. In addition, the physical mechanism of the polarization conversion is analyzed by the distributions of surface currents. These features pave a novel way for the broad band polarization converter and hold application in the area of sensing, THz communication and tunable polarizers.
机译：提出了一种基于混合层，金（Au）膜和介电基板的混合超材料转换器，以实现太赫兹（THz）波段的线性和圆偏振转换。混合层由二氧化钒（VO_2）平面和I形谐振器组成。在线性和圆偏振波下，从2.10到5.03 THz的宽频带范围内，都可以实现90％以上的偏振转换率（PCR）。并且，PCR在共振频率附近达到几乎统一。同时，超材料召集者对入射角敏感。此外，通过提出的偏振转换器可以实现受控的调制特性。另外，通过表面电流的分布来分析极化转换的物理机理。这些特性为宽带偏振转换器铺平了新方法，并在传感，太赫兹通信和可调偏振器领域保持了应用。

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  • 来源
    《Optical and quantum electronics》 |2017年第12期|401.1-401.11|共11页
  • 作者

    Zhongyin Xiao; Huanling Zou; Xiaoxia Zheng; Xinyan Ling; Lei Wang;

  • 作者单位

    Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai, China;

    Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai, China;

    Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai, China;

    Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai, China;

    Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Hybrid metamaterial; Polarization converter; Terahertz; Dynamic modulation;

    机译：混合超材料;极化转换器;太赫兹动态调制;

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